ISCO column monitor and integrator
Manufacturers' Literature
Gc's, Bull. 5700, 16 p, describes Model 5700A low-cost gas chromatograph. Four pages discuss new detectors and controls, and another four discuss new design concepts. Hewlett-Packard. 215-268-2281 462
Application Notes
Magnetic field probes, 4 p, liste 110 third-generation probe models for transverse, axial, two-axis, or three-axis magnetic field measurements. F. W. Bell. 614-888-7501 463
Using data storage, application note 133-3, 14 p, gives specific applications of adding data storage option to the Model 3480A/B digital voltmeter: A to D conversion, high-speed scanning, and DVM measurement speeds inde pendent of system speeds. HewlettPackard 474
Switching and sampling valves, 8 p,
illustrates and describes valves for gas or liquid sampling and switching. Dohrmann. 415-968-9710 464
T H E PEAK PERFORMERS offer you: AUTOMATIC INTEGRATION AUTOMATIC
PEAK COLLECTION ABSORBANCE A N D % Τ MONITORING OF TWO WAVELENGTHS OR COLUMNS The ISCO UA-4 column densitometer gives you high sensitivity absorbance monitoring on a built-in recorder, at wavelengths of 254 nm, 280 nm, or others into the IR. Accessory instrumen tation adapts the UA-4 for scanning gels, centrifuged density gradients, and electrofocusing columns. The ISCO Model 950 electronic inte grator can be used with liquid or gas chromatography detectors and similar instruments. It has automatic baseline compensation, 1 second to 2 hour peak duration capability, retention time and integral printout, and is available with an automatic fraction cutter to physically isolate peaks after integration. It is priced at $1,985.00. The current ISCO catalog describes these and other biochemical research instru ments for your lab. A copy is waiting for you.
INSTRUMENTATION SPECIALTIES COMPANY 4700 SUPERIOR LINCOLN, NEBRASKA 68504 PHONE (402) 434-0231 TELEX 48-6453
Atomic analysis systems, 6-p brochure describes SpectraSpan 101 for use in both atomic absorption and atomic emission. Spectrametrics, Inc. 617272-0540 465 Plastic labware, 1972 special catalog includes information and prices on AR plastic labware. Mallinckrodt. 314231-8980 466 Calorimetric dta, 4 p, gives specifica tions for the 2000 system, with temper ature range of - 2 0 to +500°C. Mettler Instrument Corp. 609-448-3000 467 Interference filters, 16-p catalog sale of filters covering the spectral range from 2400 A to 1.5 μ," many sizes and config urations. Corion Instrument Corp. 617-890-5656 468 Optical elements, 2 p, includes infor mation on internal reflection elements, windows, laser optics, hermetic window seals, optically transparent electrodes, and custom optics. Harrick Scientific Corp. 914-762-0020 469 Tic products, 4 p, precoated plates, ad sorbents, spray indicators, racks, spray bottle, tic tanks. Supelco, Inc. 814359-2732 470 Dye lasers, 6-p folder contains informa tion on SUA 9-11 Series dye lasers. Electro-Photonics Ltd., The Cutts, Dunmurry, Belfast, Northern Ireland, U.K. Tel: Belfast (0232) 618225 Pesticide standards, 38 p, lists rare and common pesticide standards. In cludes insecticides, herbicides, fumigants, fungicides, synergists, repellents, and plant growth regulators. Chem Service, Inc. 215-692-3026 471 Viscosity, 8 p, SynehroLectric viscom eters, simple, portable, control, high shear, Laray Viscomater. Testing Ma chines, Inc. 516-842-5400 472
CIRCLE 103 ON READER SERVICE CARD 100 A
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ANALYTICAL CHEMISTRY, VOL. 4 4 , NO. 7, J U N E 1 9 7 2
Hydrocarbons in water, infrared deter mination, 6 p, experimental procedure . uses the Miran analyzer. Wilks Scien tific Corp. 473
Remote control of a data-logging sys tem, application note 133-2, 20 p, tells how to operate the Model 3485A scan ning unit by remote control. HewlettPackard 475 Vol VII, No. 1, 8 p, titled analog multi plication and division using an IC mul tiplier; includes circuit diagrams and recorder tracings. Applications include use in a ratio-recording and doublebeam spectrophotometer. McKee-Pedersen Instruments 476 Fluorescence News, Vol 6, No. 3, 12 p, is concerned with the application of fluorescence and gas chromatography to mass drug screening. Includes a selec tive bibliography for fluorometric de termination of drugs of greatest abuse. American Instrument 477 Laser light scattering, 4 p, use of Dif ferential I in standardizing bacterial culture media and suspensions. Science Spectrum 478 Epr and nmr applications, 12-p issue of Varian Instrument Applications, Vol 6, No. 1, includes articles on epr spectros copy as a cancer diagnostic tool and pulsed Fourier-transform nmr systems in the study of complex molecules. Varian 479 Gc, Bull. 6000, 8 p, includes experimen tal application descriptions in under graduate chemistry with the Basic Se ries 6500 gas chromatograph. Carle Instruments, Inc. 480 Flavor, The Givaudan Flavorist, No. 1, 1972, 8 p, includes an article on the iso lation of flavor components from foods bv distillation and absorption. Givau dan Corp. 481 Analysis of mercurials, 2 notes, one on measurement of organic, nonorganic, and elemental mercury, and the second on measuring plating constituents such as copper, tin, and zinc. Spectrametics, Inc. 482
